Rewrite code on file save

[HerringtonDarkholme]

Discussed in https://github.com/ast-grep/ast-grep/discussions/829

^{Originally posted by AlexeyDuybo January 1, 2024} Hi, is it possible to rewrite the code, according with the "fix" option in the rules, when saving the file? I use vscode extension but it doesnt rewrite the files on save

[SoonIter]

Here is some eslint-related information as an entry point for our investigation

  "editor.codeActionsOnSave": {
    "source.fixAll.eslint": "explicit"
  },

In addition, we should try to avoid ast-grep as the default formatter, the most commonly used method of ast-grep should be used as a supplement to the formatter rather than being a formatter. Maybe our goal is to let eslint, prettier etc can work together when saving